Method and apparatus for coating pipe



March 16 1926.

F. M. STRECKER METHOD AND APPARATUS FOR COATING PIPE Filed May 20, 1925INVENTQR. FRED M 51'}? scum Patented Mar. 16, 1926.

FRED M. STRECKER, OF AKRON, OHIO.

METHOD AND APPARATUS FOR COATING PIPE.

To all whom it may concern:

Be it known that I, FRED M. STREOKER, a citizen of the United States,and a resident of Akron, county of Summit, and State of Ohio, haveinvented certain new and useful Improvements in Methods and Apparatusfor Coating Pipe, of which the following is a specification.

This invention relates to methods and ap paratus for coating piping ortubing with materials such as asphaltum or the like which are heated tokeep them in a liquid state.v

The chief objects of the invention are to provide a simple dipping tankconstruction for coating pipe, to provide an improved .means for heatingthe coating material to maintain it in proper condition for applying thedesired coating on the pipe and to provide an improved method forcoating thepipe.

The foregoing and other objects are.obtained and carried .out by theapparatus illustrated in the accompanying drawingsand described indetail below. It is to be understood that the invention is not limited'to the specific form thereof shown and described.

Of the accompanying drawings,

Figure 1 is a vertical diametral-section through the apparatus;

Figure 1 is a detail of the manner! of supporting the dipping tank; and

Figure 2 is a plan thereof.

Referring to the drawings, 10 isan outer shell for the tank made up of anumber of sections 11, 11 sunk into the earth a distance,

somewhat greater than the length of the longest pipe section to becoated, and supported at its bottom in a concrete base 10".

Concentrically arranged within shell 10 is a similar shell 12 of smallerdiameter, the shell 12 forming the outer wall of the dipping tankproper. Shell 12 is spaced from the bottom of shell 10 and is supportedby I-beam sections 13, 13. An annular plate 14 forms a closure for theupper end of the annular space between shells 11 and. 12.

Within shell 12 is supported on I-beams 13 a third shell 15 forming theinner 'wall of the dipping tank proper. An annular bottom plate 16,restlng on I-beams 13, closes the lower end of the annular dipping tankprovided by shells 12 and 15, the upper en of this tank, of course,being open. Both ends of shell 15 are open.

Application filed May 20, 1925. Serial. No. 31,727.

In the space between shells 12 and 15, the coating fluid such asasphalt, indicated at 17, is supplied.

Heading downwardly into the space between outer shell 11 and shell 12 isa pipe 18 for supplying hot gascssuch as may be obtained from an oilburner 19 or other suitable hot gas generating device and forced intosaid space by a suitable blower '20.

Arranged on shell 12 and extending outwardly therefrom on differentportions of its periphery are a series of vanes 21, 21 adapted to causethe current of hot gases from pipe 18 to take paths entirely about thedipping tank to uniformly heat the fluid therein.

In operation, the hot gases, flow downwardly about the dipping tank,heating it and serving also to insulate it from the earth. They thentravel upwardly through shell 15 serving thus to heat. the liquid in thetank from the inside as well as the outside. They then escape out of thetop of shell 15 to the atmosphere.

When the coating liquid is at the desired temperature, the pipe 22,which is preferably heated before dipping, is lowered into the coatingtank for a suflicient period to insure an adequate coating.

It will be seen from the foregoing that simple, inexpensive apparatusand method have been provided for effectively coating pipe. It will alsobe apparent that the method and apparatus are adapted with suitablemodification for coatingother articles of cylindrical or otherstructural shape without sacrificing any of the benefits to be derivedfrom theinvention. Accordingly, modifications of the invention may beresorted to without departing from the. spirit thereof or thescope ofthe appended claims.

By the term annular as used in the claims, othershaped tanks areincluded as equivalents depending upon the cross-sectional shape of thetubing or pipe to be coated.

I "What I claim is:

"1. Apparatus for coating pipe by dipping, comprising a tank forproviding an"- annular column of liquid, said tank being open at thetop, and means for circulating d of the tank.

2. Apparatus for coating pipe'by dipping, comprising a tank forproviding an annular My 50mm? umi: sum-mun n "the first inn and mumsfray: circu mt hut sms dmm war 11y in tin? 0mm tank mm ummu'fliy shoutU10 mum. side of him first tank.

umnwiaing :1 H1215; m'uvldingz; an annular. mhmm 011 liquid, mid tankbeing 011ml mi 1115: mm :1 Sui-mad mm; sumrwunding: PM firs; mull. :mfu1110:1111; f0! (tiz'uumtingg' not Q3153 in NW mm 2mm and lmut We insideof the iu'si (11111:.

.1 1mm ruins 'm' mmimg pipe by dipping}; *mrml'isimgg :1 siwH Sunk intothe Earth an annular L: n wfl'h'm U10 shell and spaced iii-ow Hm W211sand the bottom Mammoth smi-i. mm: Ming; 0pm at he tap and nmzms i 02.

01132111215115; hot 3 m "1111 the shall do "wzmfi v mbmfli m hm]: amt}then upm-mdly' Mont U10 inner 0f? the -mm=;..

U. lmmpuratus i101 naming pipe by cfipping, conlprisingz :1 121ml: 1 01providing; an annular mlmnn of liquid, said tank being open the top, andmenus for cilclfiating hot gases about Hm Lani;

A mppm'atus 3- 501- couting pipe by dipping, von'xprisingg' a $112111":fm; provldmg an annular column 05 liqulim mid tank being open at theunp nwzms 1'01 (iiruciing hot gases in a path binwnwm'ily and [inwardlyabout the "nmnk and a device for i'm'cing said gases along; said path.

8. jwpzu'ams mumting; pipe by dipping, mnrm'ising :1 tam]; fur providingan annular mhmm of: liquid said hulk having an open Lop and being; sunkinto the earth, means prm'idimy a path in? hot gases down'vmrdly andupwardly about the tank, and means for owing "110's mng said pm?"

